the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
| 03 Aug 2022
On the use of IASI spectrally resolved radiances to test the EC-Earth climate model (v3.3.3) in clear-sky conditions
Stefano Della Fera
Federico Fabiano
Piera Raspollini
Marco Ridolfi
Ugo Cortesi
Flavio Barbara
Jost von Hardenberg
Abstract. The long-term comparison between simulated and observed spectrally resolved radiances can represent a stringent test for the direct verification and improvement of General Circulation Models (GCMs). From the mid of 2000s, stable hyperspectral observations of the Mid-Infrared region (667 to 2750 cm-1) the Earth emission spectrum have been provided by different sensors (e.g., AIRS, IASI and CrIS). In addition, the FORUM mission, selected to be the ninth ESA Earth Explorer mission, will measure, starting from 2027, the terrestrial radiation emitted to space at the top of the atmosphere (TOA) from 100 to 1600 cm-1 filling the observational gap in the far-infrared (FIR) region, from 100 to 667 cm-1.
In this work, in anticipation of FORUM measurements, we compare existing IASI observations to radiances simulated on the basis of the atmospheric fields predicted by the EC-Earth GCM (version 3.3.3) in clear-sky conditions. In order to simulate spectra based on the atmospheric and surface state provided by the climate model, the radiative transfer model σ-IASI has been implemented in the Cloud Feedback Model Intercomparison Project (COSP) package. Therefore, on-line simulations provided by EC-Earth model equipped with the new COSP + σ-IASI module have been performed in clear-sky conditions with prescribed sea surface temperature and sea-ice cover, every 6 hours, over a timeframe consistent with the availability of IASI data.
Systematic comparisons between observed IASI MetOp-A L1C data and model outputs have been performed in 10 cm-1 spectral intervals, on global and regional scales, by distinguishing the surface type (land, sea). The long term analysis shows a warm bias of the climate model in the roto-vibrational water vapour bands and in the CO2 absorption band. These biases represent a strong evidence of a temperature bias of the model in the upper-troposphere and in the stratosphere, while a cold bias occurs over land.
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Notice on discussion status
The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.
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Preprint
(2335 KB)
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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.
- Preprint
(2335 KB) - BibTeX
- EndNote
- Final revised paper
Journal article(s) based on this preprint
Stefano Della Fera et al.
Interactive discussion
Status: closed
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CEC1: 'Comment on egusphere-2022-479', Juan Antonio Añel, 24 Aug 2022
Dear authors,
I have to bring to your attention again the issue with the σ-IASI code previously raised by the Topical Editor. Unfortunately, I can not consider your excuse for not publishing it satisfactory, as it is a third-party model out of your control. Ultimately, you decided to use non-free software for your work, which goes against the principles of the scientific method and precludes the replicability and reproducibility of your study.
From your reply to the topical editor, I understand that you have discussed this with the authors of the model. Their reply does not seem too convincing. What prevents the authors of σ-IASI from publishing the code? It would be good to have a reply to this question.
However, what is more problematic is that the web server at the Università degli Studi della Basilicata is not a trustable repository for long-term archival, something necessary in scientific publication. Indeed, the web page of the model is not updated since 2010. If the email address that you provide to get access to σ-IASI becomes suddenly unresponsive, the accessibility to the code and, therefore, the replicability of your work would break. If the authors of σ-IASI do not want to publish the code, at minimum, if they want to use it for "scientific" purposes, they should store it in a suitable repository for scientific research (e.g. Zenodo) and issue a DOI for it, that you, for example, could cite as a user. This repository does not need to be accessible to anyone and, at the same time, would be trustable and citable. This is the bare minimum we need to ask you in this case.
Therefore, please, liaise with the σ-IASI authors to fix this situation, according to the exposed above, and reply to this comment with the new information (link and DOI) for the new repository. Also, modify the Code Availability Section of your manuscript accordingly in any potential reviewed version.
As a personal note, if the σ-IASI developers do not publish their code, I advise you to avoid using it in the future.
Juan A. Añel
Geosci. Model Dev. Executive Editor
Citation: https://doi.org/10.5194/egusphere-2022-479-CEC1 -
AC1: 'Reply on CEC1', Stefano Della Fera, 26 Aug 2022
Dear editor,
Thanks for the further information and suggestions.
As discussed before, we were already working with the sigma-iasi authors for the publication of the code in an accessible repository.
Thanks to the sigma-iasi authors, Â the code is now available on Zenodo at https://zenodo.org/record/7019991#.YwiMtXZBxD9 . I will add this information in the code-availability section in the next reviewed version of the manuscript.
Please, let us know if this action addresses the question with GMD guidelines.
Thanks again.
Citation: https://doi.org/10.5194/egusphere-2022-479-AC1 -
CEC2: 'Reply on AC1', Juan Antonio Añel, 26 Aug 2022
Dear authors,
Many thanks for your work. Publishing the code in Zenodo under a CC-4.0 license is a great step forward and fixes the code availability problems.
Best regards,
Juan A. Añel
Geosci. Model Dev. Executive Editor
Citation: https://doi.org/10.5194/egusphere-2022-479-CEC2
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CEC2: 'Reply on AC1', Juan Antonio Añel, 26 Aug 2022
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AC1: 'Reply on CEC1', Stefano Della Fera, 26 Aug 2022
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RC1: 'Comment on egusphere-2022-479', Anonymous Referee #1, 30 Sep 2022
Please find the complete review in the attached document.
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AC2: 'Reply on RC1', Stefano Della Fera, 09 Dec 2022
The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2022/egusphere-2022-479/egusphere-2022-479-AC2-supplement.pdf
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AC2: 'Reply on RC1', Stefano Della Fera, 09 Dec 2022
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RC2: 'Comment on egusphere-2022-479', Anonymous Referee #2, 03 Nov 2022
The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2022/egusphere-2022-479/egusphere-2022-479-RC2-supplement.pdf
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AC3: 'Reply on RC2', Stefano Della Fera, 09 Dec 2022
The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2022/egusphere-2022-479/egusphere-2022-479-AC3-supplement.pdf
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AC3: 'Reply on RC2', Stefano Della Fera, 09 Dec 2022
Interactive discussion
Status: closed
-
CEC1: 'Comment on egusphere-2022-479', Juan Antonio Añel, 24 Aug 2022
Dear authors,
I have to bring to your attention again the issue with the σ-IASI code previously raised by the Topical Editor. Unfortunately, I can not consider your excuse for not publishing it satisfactory, as it is a third-party model out of your control. Ultimately, you decided to use non-free software for your work, which goes against the principles of the scientific method and precludes the replicability and reproducibility of your study.
From your reply to the topical editor, I understand that you have discussed this with the authors of the model. Their reply does not seem too convincing. What prevents the authors of σ-IASI from publishing the code? It would be good to have a reply to this question.
However, what is more problematic is that the web server at the Università degli Studi della Basilicata is not a trustable repository for long-term archival, something necessary in scientific publication. Indeed, the web page of the model is not updated since 2010. If the email address that you provide to get access to σ-IASI becomes suddenly unresponsive, the accessibility to the code and, therefore, the replicability of your work would break. If the authors of σ-IASI do not want to publish the code, at minimum, if they want to use it for "scientific" purposes, they should store it in a suitable repository for scientific research (e.g. Zenodo) and issue a DOI for it, that you, for example, could cite as a user. This repository does not need to be accessible to anyone and, at the same time, would be trustable and citable. This is the bare minimum we need to ask you in this case.
Therefore, please, liaise with the σ-IASI authors to fix this situation, according to the exposed above, and reply to this comment with the new information (link and DOI) for the new repository. Also, modify the Code Availability Section of your manuscript accordingly in any potential reviewed version.
As a personal note, if the σ-IASI developers do not publish their code, I advise you to avoid using it in the future.
Juan A. Añel
Geosci. Model Dev. Executive Editor
Citation: https://doi.org/10.5194/egusphere-2022-479-CEC1 -
AC1: 'Reply on CEC1', Stefano Della Fera, 26 Aug 2022
Dear editor,
Thanks for the further information and suggestions.
As discussed before, we were already working with the sigma-iasi authors for the publication of the code in an accessible repository.
Thanks to the sigma-iasi authors, Â the code is now available on Zenodo at https://zenodo.org/record/7019991#.YwiMtXZBxD9 . I will add this information in the code-availability section in the next reviewed version of the manuscript.
Please, let us know if this action addresses the question with GMD guidelines.
Thanks again.
Citation: https://doi.org/10.5194/egusphere-2022-479-AC1 -
CEC2: 'Reply on AC1', Juan Antonio Añel, 26 Aug 2022
Dear authors,
Many thanks for your work. Publishing the code in Zenodo under a CC-4.0 license is a great step forward and fixes the code availability problems.
Best regards,
Juan A. Añel
Geosci. Model Dev. Executive Editor
Citation: https://doi.org/10.5194/egusphere-2022-479-CEC2
-
CEC2: 'Reply on AC1', Juan Antonio Añel, 26 Aug 2022
-
AC1: 'Reply on CEC1', Stefano Della Fera, 26 Aug 2022
-
RC1: 'Comment on egusphere-2022-479', Anonymous Referee #1, 30 Sep 2022
Please find the complete review in the attached document.
-
AC2: 'Reply on RC1', Stefano Della Fera, 09 Dec 2022
The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2022/egusphere-2022-479/egusphere-2022-479-AC2-supplement.pdf
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AC2: 'Reply on RC1', Stefano Della Fera, 09 Dec 2022
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RC2: 'Comment on egusphere-2022-479', Anonymous Referee #2, 03 Nov 2022
The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2022/egusphere-2022-479/egusphere-2022-479-RC2-supplement.pdf
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AC3: 'Reply on RC2', Stefano Della Fera, 09 Dec 2022
The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2022/egusphere-2022-479/egusphere-2022-479-AC3-supplement.pdf
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AC3: 'Reply on RC2', Stefano Della Fera, 09 Dec 2022
Peer review completion
Journal article(s) based on this preprint
Stefano Della Fera et al.
Stefano Della Fera et al.
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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.
- Preprint
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